关键词: LiDAR传感器, 作物表型检测, 自主导航定位, 精准变量施药

Abstract: Agricultural sensor is the key supporting technology to realize agricultural modernization. In order to supplement the volume of agricultural sensors, more and more advanced and mature industrial sensors have been used in agricultural field effectively. There are some outstanding advantages of LiDAR system for complicated and changeable agricultural scenario since LiDAR system is not affected easily by light environment, and has the ability to build threedimensional model, higher resolution ratio, strong antiinterference capability, mature technology and products. This paper briefly introduces the performance characteristics, working principle, classification, market applications and new technologies of LiDAR system. Based on a large number of relevant studies at home and abroad, systematic presentations about LiDAR system applied in the following five agricultural scenarios were given including detection of forest parameters, geometric characteristics of fruit tree, geometric characteristics of crop phenotypes, autonomous navigation and positioning of agricultural vehicles, and sprayer drift. Then the requirements and challenges of LiDAR technology and data processing methods for agricultural scenario were discussed. Finally, new LiDAR product and technology combined with automatic acquisition system and intelligent data analysis method would greatly improve the application requirements of different levels of agricultural scenes in terms of multiscale, precision, comprehensiveness, richness and realtime data.

Key words: LiDARsensor, crop phenotypic detection, autonomous navigation and positioning, precise variable application